6533b7cffe1ef96bd1259a9b

RESEARCH PRODUCT

On pair production of scalar top quarks in e+e- collisions at ILC and a possibility of their mass reconstruction

W. MajerottoN. B. SkachkovAlfred BartlK. MoenigA. N. Skachkova

subject

PhysicsQuarkNuclear and High Energy PhysicsTop quarkParticle physicsRadiationLuminosity (scattering theory)010308 nuclear & particles physicsScalar (mathematics)High Energy Physics::PhenomenologyFOS: Physical sciences01 natural sciencesAtomic and Molecular Physics and OpticsHigh Energy Physics - PhenomenologyPair productionHigh Energy Physics - Phenomenology (hep-ph)0103 physical sciencesNeutralinoRadiology Nuclear Medicine and imagingHigh Energy Physics::Experiment010306 general physicsBeam energy

description

We study pair production of scalar top quarks in e+e- collisions with the subsequent decay of the top squarks into b-quarks and charginos. We simulate this process by using PYTHIA6.4 for the beam energy 2Ebeam = 350, 400, 500, 800, 1000 GeV. A set of criteria for physical variables is proposed, which provides good separation of stop signal events from top quark pair production being the main background. These criteria allow us to reconstruct the mass of the top squark with an integrared luminosity of 1000 1/fb provided that the neutralino mass is known.

https://dx.doi.org/10.48550/arxiv.0906.3805